Is there a pin-compatible replacement for PMEG4030ER,115?

Currently, no pin-compatible replacements in the same SOD-123W package have been verified. All identified alternatives like SS34B or SS36 are in different packages (e.g., SMB, SMA) and are not drop-in replacements.

What risks should I check before replacing PMEG4030ER,115?

The primary risk is the package mismatch; all alternatives require a new PCB layout. Also, verify the forward voltage (Vf) and reverse leakage current (Ir) of the candidate part to ensure it meets your application's efficiency and power loss requirements.

PMEG4030ER,115 Alternatives, Datasheet & Cross Reference | Nexperia USA Inc.

Find functional alternatives for the PMEG4030ER,115 Schottky diode. While no direct pin-compatible replacements have been identified, several parts offer matching or superior electrical ratings in different packages, requiring PCB layout changes.

AI replacement insight

Package riskhigh

Requires board redesign. Target is SOD-123W, alternates are larger SMA/SMB.

Electrical riskmedium

Must verify forward voltage (Vf) and dynamic parameters to ensure efficiency.

Sourcing risklow

Candidates are active and available from multiple manufacturers.

Can it be replaced directly?

No direct, pin-compatible replacement for the PMEG4030ER,115 has been found. All candidates require a board layout change.

Best replacement path

Use SS34B as a functional alternative if a PCB redesign is feasible, as its core electrical ratings match the target.

Main risk

Physical incompatibility due to different package footprints (e.g., SMB/SMA vs. SOD-123W).

Recommended alternatives

A functional alternative with matching voltage and current, but in a different package requiring board redesign.

View details

Alternative comparison matrix

Feature / factor	PMEG4030ER,115	SS34B	SS36	Compatibility / risk
Package	SOD-123W	DO-214AA (SMB)	-	DO-214AC (SMA) — Not a drop-in replacement; requires new PCB layout.
Voltage V	40.0	40.0	-	60.0 — Higher reverse voltage provides more margin.
Current A	3.0	3.0	-	3.0 — Average rectified current matches.
Voltage Forward V	0.54V @ 3A	0.55V @ 3A	-	0.75V @ 3A — Significantly higher Vf will increase power dissipation.

Application & sourcing insights

Questions & answers

SS34B offers identical voltage (40V) and current (3A) ratings, making it a strong functional alternative, but it comes in a larger SMB package that requires a board redesign.